i’d go with the 2.4 just for the little extra power if you do decide to load it up and take some heavier things with you. The larger engine would prob hold up a little better to the heavier loads. I’d guessing the gas would be the same. Its funny though the 3.4L in my impala gets just the same as the 3.8L ones, so i’d just go with the larger. I think they are cool, props to getting a cool company car. Get a grey one, then paint the bottom half red with some flat black rally wheels and white walls!@!!